The Honda CR500 was a popular motocross bike that was produced until 2001. While there is ongoing demand and nostalgia for the CR500, Honda has not released any official plans to reintroduce or manufacture a new CR500 model.
That being said, if you have a specific request for a custom or one-off motorcycle, it is best to directly contact Honda or reach out to specialized custom bike builders who can potentially create a custom CR500-inspired bike for you. Keep in mind that such requests may involve substantial costs and engineering considerations, and it would ultimately be at the discretion of Honda or a custom builder to fulfill such a request.
It's important to note that manufacturing a one-off motorcycle involves significant investment in research, development, testing, and production, which may not be economically viable for a single order. However, it is worth exploring your options and discussing your requirements with Honda or custom builders to determine what possibilities exist.
For the most accurate and up-to-date information regarding the availability and possibility of a custom or one-off CR500, I recommend reaching out directly to Honda or contacting custom motorcycle builders who specialize in creating unique and personalized bikes.